Many much problems

Ok my friend’s system is having some problems, first off The modem im installing isn’t being recognized fully. I put the card in, it boots up and says this is a Generic SoftK56. No it isn’t uininstall, install drivers it searches and find Generic SoftK56 CARP and says successfully installed. Then go to connect to the internet is says no modems installed. Its and ArchTek 56 v9.2 and is brand new. Next His motherboard (ASUS P4S800) isn’t registering USB ports, sometimes it does, sometimes it doesnt. I installed SP-1 and they stopped working and i uninstalled it and they only sporadically work. It’s quite confusing

P4 2.4
ATi All-In-Wonder 9700
Remote Wonder
512 mb of DDR400